/*
 *
 *   Copyright 2017 the original author or authors.
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 */

package org.powermock.core.classloader.javassist;

import javassist.ClassClassPath;
import javassist.ClassPool;
import org.powermock.core.classloader.annotations.UseClassPathAdjuster;

class ClassPoolFactory {
    private UseClassPathAdjuster useClassPathAdjuster;
    
    ClassPoolFactory(UseClassPathAdjuster useClassPathAdjuster) {
        this.useClassPathAdjuster = useClassPathAdjuster;
    }
    
    ClassPool create() {
        ClassPool classPool = new ClassPool();
        classPool.appendClassPath(new ClassClassPath(this.getClass()));
        
        if (useClassPathAdjuster != null) {
            try {
                Class<? extends ClassPathAdjuster> value = useClassPathAdjuster.value();
                ClassPathAdjuster classPathAdjuster = value.newInstance();
                classPathAdjuster.adjustClassPath(classPool);
            } catch (Exception e) {
                throw new RuntimeException("Error instantiating class path adjuster", e);
            }
        }
        
        return classPool;
    }
}
